[web] Add missing header to add new device page

[LEDE Commits]

jow pushed a commit to web.git, branch master:
https://git.lede-project.org/?p=web.git;a=commitdiff;h=5b024b03c3a302b6da794374587eed0bf3954972

commit 5b024b03c3a302b6da794374587eed0bf3954972
Author: Jo-Philipp Wich <jo at mein.io>
AuthorDate: Sun Jul 17 17:50:17 2016 +0200

    Add missing header to add new device page
    
    Signed-off-by: Jo-Philipp Wich <jo at mein.io>
---
 docs/development_new_device.txt | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/docs/development_new_device.txt b/docs/development_new_device.txt
index c2c9153..c2fb3e7 100644
--- a/docs/development_new_device.txt
+++ b/docs/development_new_device.txt
@@ -1,3 +1,5 @@
+---
+---
 === Adding a new device
 
 A good all-round advice would be to start by looking at recent commits about adding a new device, to see what files where changed and how.